*{ margin:0; padding:0; }
.ad{width:900px;height: 430px;background-color: white}
.txt1{width: 600px;height: 30px;}
.txt2{width: 30px;height: 26px;line-height:28px;text-align:center;}
.txt3{width: 300px;height: 30px;margin-top: 10px;}
#bc,#qx{width: 80px;height: 30px;border-radius: 5px 5px 5px 5px;
    border: 1px solid black;margin-right: 0px;line-height:28px;text-align:center;overflow:auto}
#bc{background-color: #FFFF00;margin-top: 50px;margin-left: 200px;}
#qx{margin-top: 50px;margin-left: 10px;}
.ad a{text-decoration: none;color: #000000;}
.ad button{width: 30px;height: 30px;}
.ad div{margin-top: 10px;}
.dv div{float: left;width: 40px;height: 30px;float: left;margin-left: 5px;
    line-height:28px;text-align:center;border: 1px solid black;}
.d3{width: 600px; height: 30px;}
.dv3 div{float: left;width: 20px;height: 20px;margin-left: 10px;border: 1px solid black;
    line-height:20px;text-align:center;}
.fd{float: left;}